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Sticker of Broad-bordered yellow underwing
Bug card No. 0634 of 4,939

Broad-bordered yellow underwing

Noctua fimbriata
Eats: PlantsMothsGardens and meadows6 legs

The broad-bordered yellow underwing is a big moth with brown or olive green front wings. When it flies, it flashes bright orange back wings with a very wide black border. The flash of colour can startle a hungry bird.

Lives in
Across Europe and into Asia as far as western Siberia, in gardens, meadows and woods
Wingspan
4.5 to 5.5 cm (1.8 to 2.2 in)
Top speed
about 16 km/h (9.9 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It cannot bite or sting.
What does it eat?
Its caterpillars eat many plants, like cowslips, dandelions and grapevines.
For real!Photo of Broad-bordered yellow underwing
Picture by Lymantria. CC BY-SA 3.0, via Wikimedia Commons.

How big is it?

How wide are its wings?

Broad-bordered yellow underwing wings about 5.5 cm tip to tip (2.2 in)A toy building brick about 3.2 cm (1.3 in)A crayon about 9 cm (3.5 in)A banana about 18 cm (7.1 in)
wings as wide as 1.5 toy building brickscould fly across a whole football pitch in 24 seconds

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cool stuff

Fun facts

1

When it rests, its front wings cover the bright back wings, so it is hard to see.

2

The females are usually pale reddish brown, while the males are red brown or olive green.

3

Its caterpillar spends the winter as a caterpillar and keeps growing in spring.

4

The moths fly from late June until October.

you asked

Most asked questions about Broad-bordered yellow underwing

?What does the broad-bordered yellow underwing eat?

Its caterpillars eat cowslips, dandelions, grapevines and many other plants.

?How big is the broad-bordered yellow underwing?

Its wings measure about 4.5 to 5.5 centimetres from tip to tip.

For bug experts

Scientific name
Noctua fimbriata
Named by
Schreber, 1759
Group
Moths
Family
Noctuidae
Classification
Insecta > Lepidoptera > Noctuidae
Lives on
Europe, Asia

Where the facts come from

  1. Noctua fimbriata (Wikipedia, CC BY-SA 4.0): what it looks like, where it lives, what it eats, sizes and fun facts, retold in simple words.
  2. Picture by Lymantria. CC BY-SA 3.0, Wikimedia Commons. The sticker of this bug is drawn from this picture.

If we got something wrong, sorry, we are bug fans, not a science journal. Tell us at [email protected] and we will fix it.

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